holding an interfaith service attend by president obama this morning. now, the mood there started out as somber but the service became a rally for all of america to combat the bombings with strength and fidelity. ♪ i went up to the mountain ♪ >> good morning. it is a good morning. because we are together. we are one boston. >> the dilemma of evil is that even as it carries -- >> and nothing taken will be forgotten or lost in vain. >> bombs of terrorism may kill and injure but they cannot crush the american spirit. >> darkness cannot drive out darkness. as dr. king said. only light can do that. the -- this tragedy exposed is the best of who we are. >> obama: i'm here today on behalf of the american people with a simple message. every one of us has been touched by this attack on your beloved city. every one of us stands with you. intimidate us, terrorize us, to shake us from those values that -- the values that make us who we are as americans. it should be pretty clear by now that they picked the wrong city to do it. like bill, 78 years old the runner